/*
Sliding Labels 3.2.1
	
This is the official plugin version of Sliding Labels.
It is open source code by Tim Wright of CSSKarma.com
Use as you see fit, I'd like it if you kept this in 
the code, but basically share it and don't be a jerk.
	
Support:
http://www.csskarma.com/blog/sliding-labels-plugin
	
Version: 2 - added textarea functionality
Version: 3 - added axis parameter
- added speed parameter
- removed color parameter, as it should be define in the CSS
- added position:relative to wrapping element
- coverted to jQuery plugin
Version: 3.1 - changed "children" to "find" so it works a little better with UL & fieldsets
Version: 3.2 - Added a "className" option so you don't have to use ".slider" as the wrapper
Version: 3.2.1 - general clean up
*/

(function ($) {
    $.fn.slidinglabels = function (options, callback) {
        var defaults = {
            className: 'form-slider',
            topPosition: '5px',
            leftPosition: '5px',
            axis: 'x',
            speed: 'fast'
        },
	options = $.extend(defaults, options),
		itemwrapper = this.find('.' + defaults.className + ''),
		labels = itemwrapper.find('label');

        return labels.each(function () {
            obj = $(this);

            var parent = obj.parents('.' + defaults.className + '');
            parent.css({ 'position': 'relative' })

            // style the label with JS for progressive enhancement
            obj.css({
                'position': 'absolute',
                'top': defaults.topPosition,
                'left': defaults.leftPosition,
                'display': 'inline',
                'z-index': 99
            });

            var inputval = $(this).next().val(),
			labelwidth = $(this).width(),
			labelmove = labelwidth + 5 + 'px',
			labelheight = $(this).height();

            //onload, check if a field is filled out, if so, move the label out of the way
            if (inputval !== '') {
                if (defaults.axis == 'x') {
                    obj.stop().animate({ 'left': '-' + labelmove }, 1);
                } else if (defaults.axis == 'y') {
                    obj.stop().animate({ 'top': '-' + labelheight }, 1);
                }
            } // 	

            // if the input is empty on focus move the label to the left
            // if it's empty on blur, move it back
            $('input, textarea').focus(function () {
                var label = $(this).prev('label'),
				width = label.width(),
				height = label.height(),
				adjust = width + 5 + 'px',
				adjustUp = height + 'px',
				value = $(this).val();

                if (value == '') {
                    if (defaults.axis == 'x') {
                        label.stop().animate({ 'left': '-' + adjust }, defaults.speed);

                    } else if (defaults.axis == 'y') {
                        label.stop().animate({ 'top': '-' + adjustUp }, defaults.speed);
                    }
                } else {
                    if (defaults.axis == 'x') {
                        label.css({ 'left': '-' + adjust });
                    } else if (defaults.axis == 'y') {
                        label.css({ 'top': '-' + adjustUp });
                    }
                }

            }).blur(function () {
                var label = $(this).prev('label'),
					value = $(this).val();

                if (value == '') {
                    if (defaults.axis == 'x') {
                        label.stop().animate({ 'left': defaults.leftPosition }, defaults.speed);
                    } else if (defaults.axis == 'y') {
                        label.stop().animate({ 'top': defaults.topPosition }, defaults.speed);
                    }
                }
            });

        });

    }; // End function
})(jQuery); // End jQuery